Create cue sheet for a list of id3-tagged audio files

cuer.py

#!/usr/bin/env python3

from sys import argv
from mediafile import MediaFile


def main():
    args = argv[1:]

    first_file = True
    lines = []

    for filename in args:
        tags = MediaFile(filename)
        cuefile = tags.albumartist + " - " + tags.album + ".cue"

        if first_file:
            lines.append('REM DATE ' + str(tags.year))
            lines.append('REM GENRE ' + tags.genre)
            lines.append('PERFORMER "' + tags.albumartist + '"')
            lines.append('TITLE "' + tags.album + '"')

            first_file = False

        lines.append('FILE "' + filename + '" WAVE')
        lines.append('\tTRACK ' + format(tags.track, '02') + " AUDIO")
        lines.append('\t\tTITLE "' + tags.title + '"')
        lines.append('\t\tPERFORMER "' + tags.artist + '"')
        lines.append('\t\tINDEX 01 00:00:00')

    cue = open(cuefile,"w+")
    cue.write("\n".join(lines))
    cue.close()


if __name__ == "__main__":
    main()

Sorry for such stupid question, but how to use this script? running script itself in the folder full od dsf makes nothing

The syntax should be something like ./cuer.rb *.dsf

Running this on a bunch of .dsf with ffmpeg installed yields:

./cuer.rb:19:in '<main>': undefined method '[]' for nil:NilClass (NoMethodError)

I made pretty much the same script in Pyhon:

#!/usr/bin/env python

from sys import argv
from argparse import ArgumentParser
import subprocess
import json
import os


def main():
    args = parse_args()

    first_file = True
    for filename in args.src:
        result = subprocess.run(['ffprobe', '-v', 'quiet', '-print_format', 'json', '-show_format', filename],
                                stdout=subprocess.PIPE)
        metadata = json.loads(result.stdout)['format']

        if first_file:
            print('REM GENRE ' + metadata['tags']['genre'])
            print('REM DATE ' + metadata['tags']['date'])
            print('REM PERFORMER "' + metadata['tags']['artist'] + '"')
            print('REM TITLE "' + metadata['tags']['album'] + '"')

            first_file = False

        print_file_info(os.path.basename(metadata['filename']), metadata['tags'])


def print_file_info(filename, tags):
    print('FILE "' + filename + '" WAVE')
    print('  TRACK ' + tags['track'] + ' AUDIO')
    print('    TITLE "' + tags['title'] + '"')
    print('    PERFORMER "' + tags['artist'] + '"')
    print('    INDEX 01 00:00:00')


def parse_args():
    parser = ArgumentParser()
    parser.add_argument('--src', nargs='*')
    raw_args = argv[1:]
    args = parser.parse_args(raw_args)
    return args


if __name__ == "__main__":
    main()

Syntax:
./cuer.py --src some/folder/*.dsf

Thanks, @klizas! I rewrote it using Mutagen.